- Update to 2.13:
* generic_fp backtracing method now uses robust address probing method.
The previous approach had occasional false positives, which caused
occasional rare crashes.
* fix pkg-config files
* we now support HEAPPROFILE_USE_PID and CPUPROFILE_USE_PID environment
variables that force profile filenames to have pid appended.
Which will be useful for some programs that fork for parallelism
* MPI detection has been extended